A nanowire-on-microrod polyaniline@FeS2 hybrid as the cathode in high-performance Al-ion batteries

Haiyuan Bai; Jing Xu; Jinyun Liu; Tianli Han; Junjie Niu

doi:10.1039/d3cc03384h

A nanowire-on-microrod polyaniline@FeS₂ hybrid as the cathode in high-performance Al-ion batteries

Chem Commun (Camb). 2023 Sep 19;59(75):11216-11219. doi: 10.1039/d3cc03384h.

Authors

Haiyuan Bai¹, Jing Xu¹, Jinyun Liu¹, Tianli Han¹, Junjie Niu²

Affiliations

¹ Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241002, PR China. hantianli@ahnu.edu.cn.
² Department of Materials Science and Engineering, University of Wisconsin-Milwaukee, Milwaukee, 53211, Wisconsin, USA. niu@uwm.edu.

PMID: 37655465
DOI: 10.1039/d3cc03384h

Abstract

A nanowire-on-microrod structured polyaniline (PANI)@FeS₂ hybrid was developed via a facile metal-organic framework (MOF)-derived chemical method. The in situ grown PANI nanowires on the surface of pyramidal FeS₂ microrods displayed better mechanical flexibility and improved Al-storage performance. The PANI nanowires not only enhanced electron transfer during the electrochemical reaction, but also accommodated the volume expansion of FeS₂ during discharge. The PANI@FeS₂ hybrid as the cathode in AIBs delivered a reliable battery capacity of 152.8 mA h g^-1 along with a Coulombic efficiency of >96.5% after 500 cycles at a current density of 1.5 A g^-1. In addition, a high capacity retention of 160.2 mA h g^-1 after 150 cycles at 0.5 A g^-1 at -10 °C was achieved. These findings provide a feasible strategy by constructing a nanowire-on-microrod hybrid that can be applied in high-performance secondary batteries.